DPM involves marking items with barcodes directly instead of
with a label or by printing ink-on-paper. Most commonly, Data
Matrix or QR marks might be applied by dot - peening, laser or
chemical etching, stamping or casting on metal, plastic, rubber or
glass.

Use of this type of marking is growing quickly in the fields of
medicine - medical device UDI, electronics, and transportation.

Creating a quality barcode is especially important due to the
challenging environment for scanning the code throughout the life
of product or throughout the supply chain. Lighting, item
shape and very small code size are a few influences that might
cause a code scan to fail.